Steam-trap.



No. 773,872. PATENTED NOV. 1, 1904.

' P. KNAOKSTEDT.

STEAM TRAP.

APPLIG ATION FILED JUNE}. 1904. N0 MODEL.

I'iiiiiii I Patented November 1, 1904.

UNITED STATES PATENT OEErcE,

FRITZ KNAOKSTEDT, OF CHICAGO, ILLINOIS.

STEAM-TRAP.

SPECIFICATION forming part of Letters Patent No. 773,872, dated November1, 1904.

Application filed June 8, 1904. Serial No. 211,679. (No model.)

To (tZZ whom it may concern.-

Be it known that I, FRITZ KNAoKsTnnT, a citizen of the United States,residing at Ohicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Steam-Traps; and I dohereby declare the following to be afull, clear, and eX- act descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

My invention relates to a novel construction in a steam-trap, the objectbeing to providea simple and eflicient device of this character; and itconsists in the features of construction and combinations of partshereinafter fully described and claimed.

In the accompanying drawings, illustrating my invention, Figure 1 is atop plan view of a steam-trap constructed in accordance with myinvention, the cover being removed. Fig. 2 is a vertical section of sameon the line 2 2 of Fig. 1. Fig. 3 is a vertical section on the line 3 3of Fig. 1.

Referring now to said drawings, A indicates a casing having a cover B.The said casing A is rectangular, and in the same a rectangular float Ois pivotally mounted at one end. In

the upper wall of said float is an opening D,

- arm F and is vertically movable in the same.

At one end of said float is an extension G, which rises to a pointadjacent the upper end of the casing A and which forms an overflowthrough which the water collecting in said oasing enters the said floatat intervals. In the bottom of said float below said extension G is awell H, in the bottom of which a valve J is pivotally mounted, thelatter being located in the bottom of a tube K. Entering said casing atthe middle of one end thereof is a drainpipe L, from which a branch Mextends downwardly and fits telescopically in said tube K, the lower endof said branch pipe M forming a seat for the valve J. In said tube K area plurality of perforations N, surrounding the valve J, through whichthe water enters said tube. The said valve J is operated by the upwardmovement of the float to shut off the flow through said pipe M. The saidarm F the lower limit of its movement.

is secured at one end to said pipe L. Entering said casing A, adjacentthe pipe L, is a pipe O, connected with the exhaust or condenser of asteam plant and through which water from condensed steam enters saidcasing A. The mouth of said pipe O is controlled by a valve P, which isconnected, by means of a link, with one arm of an L-shaped lever Q,which is pivoted on an arm on said casing, the free end portion of saidlever being connected with said float by means of link R, said floatbeing thus connected with said valve P in such a manner that when saidfloat is at the lower limit of its movement said valve P is closed andwhen said float rises said valve P is opened. The said connectionbetween said valve P and the said float is so made as to permit ofconsiderable lost motion, so that when said float is at the lower limitof its movement the valve P will not be entirely closed thereby, but isclosed by means of a weight S on the free end of said L-shaped lever Q.Connected with said pipe O is a stand-pipe T, in which water fromcondensed steam collects when said valve P is closed, and from saidstand-pipe above the probable height of the collected water column asmall pipe U extends into said casing to equalize the steam-pressure inthe latter with that of the system. i

The operation of my device is as follows: Water from condensed steamenters said casing A through the pipe O, the float C being at the lowerlimit of its movement and the valveP being partially opened by thepressure of the water thereon and against the action of the weight S,which effects the final closing movement of said valve when the floatreaches Such water is deflected downwardly by means of thedeflecting-plate V, disposed over the mouth of said pipe 0. As the waterrises in said casingA the float O is raised, and during its upwardmovement the opening D is closed by the valve E, and the latter is thencarried upward with said float. The further upward movement of saidfloatcauses the valve J to become seated on the lower end of the pipe M,thereby sealing the latter and at the same time stopping further upwardmovement of said float. The water continues to rise until it overflowsthe extension G. Upon overflowing the extension G the water will causesaid float to sink, and during its downward movement the valves J and Ewill obviously be opened, thus opening the drain and admitting water tothe float through said opening D. The steam-pressure in said casing nowforces the water out in an obvious manner until the level of water inthe float is less than the level in the casing, whereupon said floatagain begins its upward movement, this operation being repeated atregular intervals and at each operation a given volume of water beingdischarged.

To enable the engineer to ascertain the total amount of condensed waterpassing through the trap in a given time, the said float may beconnected with any suitable indicator by means of the shaft \V, having acrank-arm X,

which is connected, by means of alink Y, with said float, the outer endof said shaft being connected,by means of an arm Z,with the reg ister.

1 claim as my invention 1. In a steam-tr'ap, a casing, avalve-controlled inlet for water from condensed steam, a steam-inlet, apivoted float, connection between the valve controlling the water-inletand said float for partially controlling said valve, a weight partiallyactuating said valve, a water-outlet extending into said float, a valvecarried by the latter and controlling said outlet, and an open extensionon said float through which the water collecting in said casingoverflows into said float.

2. In a steam-trap, a casing, a valve-controlled inlet for water fromcondensed steam, a steam-inlet, a pivoted float, connection between thevalve controlling the water-inlet and said float for partiallycontrolling said valve, a weight partially actuating said valve, awater-outlet extending into said float, a valve carried by the latterand controlling said outlet, an open extension on said float throughwhich the water collecting in said casing overflows into said float, anopening in said float below the upper end of said extension, and a valvemounted in the path of said opening and adapted to close the same whensaid float rises.

In testimony whereof I have signed my name in presence of twosubscribing witnesses.

FRITZ KNAOKSTEDT.

itnesses:

RUDOLPH WM. LOTZ, WV. B. SNowHoox.

